Electromagnetic Door Holder 24V DC 

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Electromagnetic Door Holder 24V DC DH-BC244
Used to keep corridors and walkways clear and release fire doors automatically in the event of an emergency.
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Door Holder Reinforced base floor Mount. DH-SBCAV
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Mini door holder Power Supply Unit BF375P
Supplied on a compact double gang plate, the BF375P provides a continuous output of 24V 250mA d.c. and is ideal for locating alongside doors which require door retaining magnets.
Three trigger methods are available, ‘trigger’ and ‘hold off’ (both of which require a signal voltage of 5-27V d.c. 10mA) and manual button release. Once triggered, the PSU’s output voltage is removed causing any door release magnets connected to it to de-energise.
The BF375P is designed specifically for use as a door release PSU and is not suitable for battery charging or any other use.
Available to buy online at. shop.comsec.ie/collections/do...